Difference between * and @ in case of parameters Post: 302140344

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vdiff

vdiff(1)							    ShapeTools								  vdiff(1)

NAME

       vdiff - display line-by-line differences between versions of files

SYNOPSIS

       vdiff [ diff-options ] [ -base path ] [ -P ] files ..

DESCRIPTION

       vdiff  is  a differential comparator for file versions that are stored in shapeTools' object base, AtFS. The functionality of vdiff is very
       similar to the diff command on your host. All options and switches that are recognized by diff can also be specified for vdiff.

       The arguments to vdiff can either be a single filename, or a pair of version identifiers. If only a filename is specified, vdiff prints the
       differences  between the specified file and the most recent version of this file that is stored in the AtFS object base. A file can be com-
       pared to any stored version by specifying the version as first, and the filename as second argument. If both arguments are version  identi-
       fiers, the difference between these two versions is printed.

       Differences between files and versions can be printed in any style that is supported by the local diff program.

       Version identifiers consist of the filename, and a version number or alias name for a version, enclosed in brackets. Example:
						      retrieve.c[4.22]	  or	retrieve.c[Rel-4.1]

       vdiff creates temporary copies of the versions that shall be compared, invokes the diff command, and finally removes the temporary copies.

OPTIONS

       -base path
	      If  vdiff  is told to produce a context diff, the filenames of the compared objects are mangeled so that the specified path replaces
	      the path of the current directory in the full pathnames appearing in the diff-header. This is useful to replace an absolute pathname
	      by a relative pathname and makes the produced context-diff easier to digest for the patch program.

       -P     With  the  -P switch turned on, vdiff won't give up if one of the two objects that shall be compared does not exist. In this case an
	      empty object is substituted for the missing one, causing the diff to be the complete contents of the existing object. This is useful
	      in  situations  when complex patches are produced that upgrade one release of a software system to a new release, and the system has
	      structurally changed (i.e. new files have been added to the system).

SEE ALSO

       diff(1), vcat(1)

AUTHOR

       Axel.Mahler@cs.tu-berlin.de

vc_scripts-2.5						     Tue Jun 29 16:42:06 1993							  vdiff(1)